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Nearly 1 in 4 Arizona teens have used a highly potent form of marijuana known as marijuana concentrate, according to a new study by Arizona State University researchers.

Among nearly 50,000 eighth, 10th and 12th graders from the 2018 Arizona Youth Survey, a biennial survey of Arizona secondary school students, one-third (33%) had tried some form of marijuana, and nearly a quarter (24%) had tried marijuana concentrate.

An Arizona State University professor’s new research has discovered that teenagers’ positive perceptions of law enforcement have decreased dramatically in the past few years, even as their confidence in other institutions has remained stable.

Momentum is beginning to shift toward addressing the effects of mass incarceration, and Arizona State University has several initiatives to address the growing concern over the fate of people in prison, how it affects their families and what happens when they rejoin society.

Guns — few issues evoke as much passion and raw emotion from almost all corners of society. No matter what your opinion of them is, they are a defining part of what it means to be an American. Whether you view guns as a public-safety issue, a constitutionally protected right or both, their place in our society provokes strong reaction and heated debate.

When you hear that phrase on modern-day detective shows, you know the jig is up; the bad guy has been caught. In a fictional TV world where crimes are solved in 30 minutes, nobody ever questions the authority of DNA evidence.

In real life, though, doubt can easily be cast on it because people get confused by scientific jargon, or because of uncertainties about how the evidence was obtained and handled — in one famous case, the O.J. Simpson murder investigation, both factors ultimately contributed to the outcome of the trial.